1. 仁：(
5) .内胚层(Endosperm)核仁、果仁(Kernel):此层含有丰富的淀粉,占谷物83%的比重. 蛋白质、矿物质、维生素的含量均非常微少. 从世界各地采集的资料显示,亚洲及非洲社会,在工业大事发展前,牛奶是非常罕见的食品,

1. （坚果的）仁，核
The kernel of a nut is the part that is inside the shell.

2. 核心；中心；要点
The kernel of something is the central and most important part of it.

e.g. The kernel of that message was that peace must not be a source of advantage or disadvantage for anyone.
那一信息的核心是和平绝不应该成为对任何人有利或不利的根源。

3. 一小部分
A kernel of something is a small element of it.

e.g. For all I know, there may be a kernel of truth in what he says.
据我所知，他的话可能有一点儿道理。

noun

1. the choicest or most essential or most vital part of some idea or experience

e.g. the gist of the prosecutor's argument
the heart and soul of the Republican Party
the nub of the story

Synonym: substancecorecentercentreessencegistheartheart and soulinwardnessmarrowmeatnubpithsumnitty-gritty

2. a single whole grain of a cereal

e.g. a kernel of corn

3. the inner and usually edible part of a seed or grain or nut or fruit stone

e.g. black walnut kernels are difficult to get out of the shell

Synonym: meat